I see it has been mentioned before, with the upcoming use of Raspberry Pi based media players (mostly MPD based) it would be awesome if Tomahawk could function as a remote/client for these devices. Also on mobile platforms as Android phones. However MPDroid works fine, Tomahawk looks way better IMHO

Is it technically possible and if yes, how difficult is it, to have Tomahawk act as an MPD client? I would certainly be willing to throw some cash to someone who makes this possible, i.e. via a plugin. Maybe a bounty on bountysource would attract some more people?!

While an MPD resolver is certainly possible, controlling MPD remotely (as a different Audio-Engine) is probably a bit of work. It's feasible, but none of the core developers run MPD themselves right now, so we would probably require some help. We'd certainly consider accepting a patch / pull request, if done right.